摘要
利用163块标准地资料和95株解析木资料,对多个树高生长模型进行比较分析,选择R ichards生长函数H=a(1-e-bA)c作为南方型杨树优势高生长模型.在分析优势高生长过程的基础上,参照前人的分析结果,确定基准年龄为6 a,立地指数级距为2 m,立地指数等级为7级,龄阶距为1 a.用差分法展开导向曲线,编制了单形立地指数表.应用分组整理后的数据资料,拟合出最优多形立地指数模型,编制了多形立地指数表.结果表明,所编单形与多形立地指数表精度均较高,且多形立地指数表精度更高,适用性也更强.
The data from 163 plots of poplar plantations and stem analysis of 95 poplar trees were used to construct the site index tables of single form and multiple form, Riehards function H=a（1-e^-bA）^c was selected for dominant height growth model of southern type poplar. By analyzing the characteristics of dominant height growth, the results were as follows ： index class was 7, baseline age was 6 yearn, the interval of site index class was 2 m, the interval of age gradation was 1 year. Single form site index table was construeted after derived curve was expanded by differential method. The optimum multiple form site index curve was fitted by means of the adjusted data, and multiple form site index curve was constructed. The results indicated that the accuracies of index table of single form site and multiple form site were both high. However, the accuracy of multiple form site index table was higher than that of the single form site index table, and the table was more practical.
出处
《福建农林大学学报（自然科学版）》
CSCD
北大核心
2006年第6期604-609,共6页
Journal of Fujian Agriculture and Forestry University:Natural Science Edition
基金
江苏省"十五"攻关资助项目(BE2001358)
关键词
杨树人工林
单形立地指数表
多形立地指数表
poplar plantation
single form site index table
multiple form site index table
